MKS 979B-01-0013 Vacuum Gauge Controller Module

Description

Key Technical Specifications

Product Introduction & Supply Chain Strategy

The MKS 979B-01-0013 is an advanced wide-range combination vacuum transducer designed for precise pressure measurement across ten orders of magnitude. Integrating Micro-Pirani thermal conductivity and inverted magnetron cold cathode technologies into a single compact housing, it is widely utilized in semiconductor manufacturing, thin-film deposition, and vacuum furnace systems.

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.

Securing the MKS 979B-01-0013 as New Surplus provides essential supply chain security. Refurbished vacuum transducers frequently suffer from contaminated internal cold cathode anodes or degraded thermal filament calibration, causing severe measurement drift and unpredicted vacuum interlock trips. Buying genuine New Surplus guarantees factory-calibrated sensitivity while eliminating OEM lead times on critical replacement units.

Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

1. Ensure the vacuum chamber is fully vented to atmospheric pressure and perform Lock-Out/Tag-Out (LOTO) on connected high-voltage power lines.
2. Put on a grounded ESD wrist strap before handling the transducer cable connection.
3. Inspect the KF25 vacuum port seal surface and O-ring groove for scratch marks, lint, or particulate contamination.
4. Record DIP switch settings or RS485 node address configurations from the existing unit’s user interface panel.

Stage 2: Removal

1. Disconnect the 15-pin Sub-D connector cable from the top of the transducer.
2. Carefully loosen and remove the KF25 aluminum wing nut clamp.
3. Remove the centering ring assembly while supporting the weight of the old transducer module.
4. Cover the exposed chamber vacuum port immediately with a clean protective plastic cap to prevent ambient dust ingress.

Stage 3: Installation (Clone & Seat)

1. Verify DIP switch settings on the 979B-01-0013 match the replaced module’s address, baud rate, and output protocols.
2. Position a fresh viton centering ring onto the KF25 chamber port.
3. Mount the 979B-01-0013 transducer vertically (recommended to prevent particulate fallout into the sensor cavity) onto the flange.
4. Install the KF25 clamp and hand-tighten the wing nut until secure. Do not over-tighten with tools.

Stage 4: Power-On & Testing

1. Reconnect the 15-pin Sub-D cable assembly securely into the module socket.
2. Apply 24 V DC system power and observe the status LEDs to confirm power initialization.
3. Pump down the vacuum chamber to base pressure; monitor the analog 0-10 V DC signal or RS485 communication link for smooth, continuous pressure decay down through the crossover point into the high-vacuum regime.

979B-01-0013

979B-01-0013

Firmware/Software Versions & Upgrade Notes

The MKS 979B-01-0013 relies on embedded firmware to control sensor switching transitions between the Micro-Pirani and Cold Cathode measurement elements.

• Firmware Compatibility: Standard MKS RS485 command protocol is backward-compatible with legacy 909 and 979 series transducers.
• Crossover Point Calibration: Firmware automatically manages the transition point between thermal conductivity and cold cathode ionization (typically around 1 \times 10^{-3} Torr). Modifying crossover threshold parameters via software commands requires factory calibration procedures to avoid system interlock instability.
• Hardware Revision Caution: Ensure that any host controller PLC software reading the analog output curves accounts for the specific output function (log-linear vs. S-curve output configuration) set on the hardware module.

Frequently Asked Questions (FAQ)

Q: Is this MKS 979B-01-0013 module brand new or has it been pulled from a working panel?

A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.

Q: Why is your price lower than OEM list price, but higher than pulled or used units?

A: Our pricing reflects the cost of securing genuine New Surplus inventory globally. It may be 20–30% higher than a refurbished gamble, but it is substantially less than OEM list prices, and it buys you 100% peace of mind. Buying a refurbished vacuum gauge carries a high risk of internal hydrocarbon contamination or worn filaments that lead to false vacuum readings and batch failure.

Q: Can I hot-swap the 979B-01-0013 during chamber operation?

A: Hot-swapping the signal cable while high voltage is applied to the internal cold cathode cell can damage the internal driver electronics or trigger unexpected system interlock faults. Always shut off 24 V DC module power before disconnecting or reconnecting the 15-pin Sub-D cable.

Q: How do I verify if the transducer requires recalibration upon installation?

A: New Surplus units are factory calibrated across their full operating range. Once installed, pump down the system to a known reference base pressure (or vent to atmospheric pressure) and check the RS485 pressure report against a master reference gauge. Fine zero/span adjustments can be executed via software commands without opening the physical enclosure.

Q: What warranty terms apply to this New Surplus module?

A: We provide a full 1-year functional warranty from the date of shipment. If the transducer experiences operational defect under normal process conditions during this timeframe, we provide an immediate advance replacement from our stocked inventory.